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diff --git a/pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/pdf/Utils.java b/pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/pdf/Utils.java
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+/**
+ * <copyright> Copyright 2006 by Know-Center, Graz, Austria </copyright>
+ * PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a
+ * joint initiative of the Federal Chancellery Austria and Graz University of
+ * Technology.
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://www.osor.eu/eupl/
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ *
+ * This product combines work with different licenses. See the "NOTICE" text
+ * file for details on the various modules and licenses.
+ * The "NOTICE" text file is part of the distribution. Any derivative works
+ * that you distribute must include a readable copy of the "NOTICE" text file.
+ *
+ * $Id: Utils.java,v 1.3 2006/10/31 08:13:02 wprinz Exp $
+ */
+package at.knowcenter.wag.egov.egiz.pdf;
+
+import java.io.File;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+/**
+ * Abstract class that contains helpful utility functions used by the digital
+ * signatures.
+ * 
+ * @author wprinz
+ */
+public abstract class Utils
+{
+
+  /**
+   * Extracts the pure content text from a given content stream.
+   * 
+   * <p>
+   * The pure content text is just an assembly of all strings that occur within the content stream in
+   * stream order.
+   * Each of these strings will be set on a new line.
+   * </p>
+   * 
+   * @param stream_bytes The content stream.
+   * @return Returns the extracted string.
+   * @throws IOException Forwarded exception.
+   */
+  public static String extractPureTextFromContentStream(
+      final byte[] stream_bytes) throws IOException
+  {
+
+    // logger_.debug("stream_bytes:");
+    // logger_.debug(new String(stream_bytes, "US-ASCII"));
+    // logger_.debug(":end of stream_bytes");
+
+    final byte OPEN = '(';
+    final byte CLOSE = ')';
+
+    StringWriter strwrtr = new StringWriter();
+    PrintWriter printer = new PrintWriter(strwrtr);
+    int open_index = -1;
+    int close_index = -1;
+    for (int i = 0; i < stream_bytes.length; i++)
+    {
+      if (stream_bytes[i] == OPEN)
+      {
+        open_index = i;
+        continue;
+      }
+      if (stream_bytes[i] == CLOSE)
+      {
+        close_index = i;
+
+        // logger_.debug("open = " + open_index + ", close = " +
+        // close_index);
+
+        int len = close_index - open_index - 1;
+        // logger_.debug("len = " + len);
+
+        byte[] bytes = new byte[len];
+        System.arraycopy(stream_bytes, open_index + 1, bytes, 0, len);
+
+        String str = new String(bytes, "ISO-8859-1");
+        // logger_.debug("string = " + str);
+
+        printer.println(str);
+
+        continue;
+      }
+    }
+    strwrtr.close();
+    String signature_text = new String(strwrtr.getBuffer());
+    // logger_.debug(signature_text);
+
+    return signature_text;
+  }
+  
+  public static int max(int[] ints) {
+     int max = Integer.MIN_VALUE;
+     for (int i = 0; i < ints.length; i++) {
+        if (ints[i] > max) {
+           max = ints[i];
+        }
+     }
+     return max;
+  }
+  
+  public static String resolveCanonical(String path) {
+     File file = new File(path);
+     try {
+      return file.getCanonicalPath();
+   } catch (IOException e) {
+      return file.getPath();
+   }
+  }
+  
+}